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T. D. INGERSOLL.

Horse Hay-Fork.

Patented March 15, 1870.

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Letters Patent No. 100,767, dated March-15, 1870.

IMPROVEMENT IN HORSE HATE-FORKS.

flheschedule referred to in these Letters Patent and making part of the same lock, in connection with an arrangement-of tines; and

has for its object the manufacture of an agricultural implement, convenient to handle, and eiiicient in operatiou for elevating or unloading hayand other similar substances.

Figure 1 is a perspective view of a machine em? bodying my invention, in its first and proper position for operation.

Figure 2 is a perspective View of the machine in its second and locked position.

Figure 3 represents the hoisting-loop E, carrying its tripping-cord, pulley e e, and the sliding bar F of the lock.-

Figure 4 represents the sleeve H attached to the sleeve-bar G, also the lock-spring 7t attached'to the studs 1 l, and m represents a stud for the locking-lever I to stop against. 1

Figure 5 represents the locking-lever I, with its lockpivot J attached, showing lock-stop i and its transverse groove j.

Figure 6 is a cross-section of the locking-lever I,

V lock-pivot J, lock-stop i, and transverse groove 7'.

In figs. 1 and 2- A A are the principal or lifting-tines of the fork.

They are connected together by the pivoting-bolt it, but separated from each other by washers and the. lower extremity of the sleeve-bar G of the lock, to give freedom of movement to the. locking apparatus which they embrace, and also to prevent the wcdging or clogging. of the hay near the pivot.

The tines A A are extended above the pivot a into curved arms B B, whichare pivoted to the supple-v mental or holding-tines 0' 0.

These tines are also extended above their pivots c 0 into arms D D, and have their upper extremities pivoted at e to the hoisting-loop E and sliding bar F of the lock. v c

The tripping-cord pulley'is shown at c 6.

One leg of the loop E is carried downward, and forms the sliding bar F,

lts edge in contact with the sleeve-bar G is notched at f, and engages-with the lock-stop i of the lock-pivot J, (see figs. 3, 5, and 6.)

The sleeve H (see fig. 4) is rigidly attached toithe sleeve-bar- G, and incloses thesliding bar F, holding it in place, and the sliding bar F holds in place the lock-pivot J, both maintaining their freedom of movement.

The lockspring k is fastened at each end to. studs 1 I, set in the sleeve-bar G, and acts against the lockinglever I.

- The studm, set in the sleeve-bar G, stops the upward movement of the lockinglever I; and the movement of all parts of the machine is stopped at its'first position by the heads of the pivot-bolts c c of the arms B B, as seen inii g. l; 'or the movement maybe stopped by one orimore studs set in the arms D D at any suitable po'ir'it.

The looking-lever I, figs. 5 and 6, has a'pivot, J, sct

near one end, at a right angle with its plane.

A pivot-hole, g, fig. 4, is cut through the sleeve H and edge of the sleeve-bar G,i'or its reception. Half the pivot-hole is out from the sleeve H the other half is out from the edge of the sleeve-bar G; so that, when the pivot takes its place in' the pivot-hole,- part of one side of the pivot will occupy the recess in the edge of the sleeve-bar, and the opposite side will stand in the sleeve-chamber and obstruct the passage of the sliding bar F.

It, therefore, becomes necessary to cut away that portion of the pivot occupying the sleeve-chamber, making a transverse groove sufliciently' wide and deep for a free movement of the sliding bar.

- The corresponding portion of the pivot that remains opposite the bottom of the groove j forms a lock-stop i, which engages with the several notches of the slid ing bar.

Thus a graduated automatic look is formed, enabling the operator to take up a large or small quantity of hay, as he may desire. I

. When in use, the operator plunges the fork into the hay, the lifting-tines A A dive downward and outwardin a curved direction under the bay to be raised, while the arms B B moveoutward, carrying the lower eX-,

tremities of the supplemental tines O G outward and downward into the hay, and the fork is locked auto- -I' matically. a

If the hay is not sufficiently packed between the upper and lower tines, the operator should force the fork further into the hay, and compel it to lock at another point.= v i The fork may be-unlocked by jerking the tripping"- cord. The look-stopis withdrawn 'from the notches of the sliding bar, the load falls, and the fork automatically resumes its former position, represented in fig. 1.

1. In a horse hay-fork, the automatic locking-lever I, its lock-pivot J, and lock-stop t,in.,con1binatio n with the sliding bar F and sleeve-bar Gr, with its attachments H, Z Z, m, and k, substantially as and for the purpose hereinbefore set forth. 7

2. The arrangement and combination of the liftingtines A A, arms B B, supplemental tines O 0, arms D D, sleeve-bar G, and sliding bar F of the locking 

